where the infimum is taken over all admissible sequences of \(T\) .
By Talagrand's majorizing measure theorem (see the presentation in [1]}), there are absolute constants \(c_1\)  and \(c_2\)  such that, for every set \(T\subset \mathbb {R}^n\) ,
\(c_1 \ell _\ast (T) \le \gamma _2(T,\Vert \cdot \Vert _2) \le c_2 \ell _\ast (T).\) 
